CAT 132-4292 BRG. NEEDLE

CAT 132-4292 is a Caterpillar needle roller bearing with an inner ring. It is primarily used in the planetary carriers of gearboxes, hydraulic pump drive shafts, or engine balance shafts of Caterpillar 320D/336D excavators, 966K loaders, 140M graders, and other models. It is used to withstand medium-to-high speed and medium-to-heavy load radial loads, and is compatible with Cat C6.4/C7.1/C9 engines and Cat 345B/C/D hydraulic systems. It limits radial runout, prevents component wear or seal failure, and is suitable for oil lubrication. The rated radial load is ≥95 kN, and the fatigue life is ≥9000 hours. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 132-4292, with inner ring needle roller bearing, suitable for 320D/336D excavator gearbox planetary carrier, 966K loader hydraulic pump drive shaft, 140M grader engine balance shaft, material is GCr15 chromium bearing steel (integral quenching HRC 60-64), cage is stamped steel plate, working temperature -40℃ to +120℃, single weight approximately 0.82 kg, suitable for SAE 15W-40 diesel engine oil lubrication, rated radial load ≥95 kN, limiting speed 5500 rpm, fatigue life ≥9000 hours, used to bear radial load, limit radial runout, and ensure smooth operation of rotating parts

Key Dimensions
Inner diameter 60.00 mm (2.362 in, tolerance H7, +0.030/0 mm), outer diameter 85.00 mm (3.346 in, tolerance h6, 0/-0.016 mm), width 22.00 mm (0.866 in, tolerance ±0.10 mm), needle roller diameter 4.00 mm (24 pieces), needle roller length 18.00 mm, radial clearance C3 (0.025-0.045 mm), shaft fit tolerance k6 (+0.018/+0.002 mm), bearing housing fit tolerance H7 (+0.030/0 mm) Material and Process: GCr15 chromium bearing steel → forging → rough grinding → quenching (850℃ oil quenching) → low temperature tempering (160℃) → fine grinding → assembly (needle roller + stamped cage + inner ring) → rust prevention treatment, hardened layer depth 2.0-2.5 With high hardness, high wear resistance, and fatigue resistance, this bearing is suitable for medium- and high-speed, medium-load conditions in transmissions, hydraulic pumps, and engine balance shafts, bearing pure radial loads.

Compatible models: Cat 320D/336D excavators (C6.4/C7.1 engine), 966K/972M loaders (Cat 345D hydraulic system), 140M/160M graders (C9 engine), 420F backhoe loaders (C6.6 engine). Used in transmission planetary carriers, hydraulic pump drive shafts, engine balance shafts, steering knuckle pins, etc., bearing radial loads, limiting radial runout, and ensuring smooth component operation.
Assembly fit: Compatible with 60 mm diameter shafts (tolerance k6, +0.018/+0.002 mm), bearing outer diameter and bearing housing fit tolerance H7 (+0.030/0 mm), bearing end face and mounting surface contact area ≥90%, radial clearance controlled after installation. 0.025-0.045 mm, compatible with M20×1.5 bolts (grade 10.9, preload torque 85-95 N・m)

Installation and Maintenance Points:

Before installation, clean the bearing, journal, and bearing housing. Check for scratches, rust, and cracks. Measure the bearing inner diameter and journal diameter, and the bearing outer diameter and bearing housing inner diameter to ensure the fit meets requirements. The bearing housing surface roughness Ra≤1.6 μm, and the end face should be flat and free from deformation.

Use the cold mounting method for installation, ensuring the bearing and journal are coaxial. Do not directly strike the bearing end face with a hammer to prevent damage to the needle rollers or cage. After installation, check the bearing’s rotational flexibility to ensure there is no jamming or abnormal noise, and the radial clearance meets C3 requirements.

Maintenance recommendations: Check the bearing wear every 2000 hours. If the raceway wear is >0.12 mm or if needle roller pitting or cage deformation occurs, replace it immediately. Change the machine oil regularly to keep the oil clean and avoid accelerated bearing wear due to oil contamination, which will affect rotational accuracy and load-bearing capacity.